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Power ICs
Microchip Technology Debuts USB/AC Load-Sharing Li-Ion/Li-Polymer Battery ChargerMicrochip announces the MCP73871 charge-management controller—a Li-Ion/Li-Polymer charger with an intelligent charge management feature that enables simultaneous AC-DC-adapter or USB-port charging and powering of devices. The single-chip charger features an integrated pass transistor and numerous battery and termination-voltage options, making it ideal for complex, space-constrained portable applications. 
Synchronous 600mA (ISW) Boost & 400mA (IOUT) Buck Regulator with 2.4MHz Switching Frequency in a 3mm x 3mm QFNLinear Technology has announced the LTC3523/-2, a combination of a 600mA (ISW) synchronous boost and a 400mA (IOUT) synchronous buck regulator in a 3mm x 3mm QFN-16 package. Both the boost and the buck regulators switch at 2.4MHz in the LTC3523-2 (1.2MHz for the LTC3523), and use current mode, synchronous topologies. The LTC3523/-2 operate from an input voltage range of 1.8V to 5.5V, making them appropriate for single cell Li-Ion/Polymer or dual-cell alkaline/NiMH applications. 
PMICs from AnalogicTech extend battery lifeBy combining two buck converters with a low input voltage used to post-regulate the second buck converter, AnalogicTech's AAT2782 and AAT2783 are said to extend battery life and reduce board footprint by powering both standard and the lower voltage noise sensitive circuits while maintaining high power efficiency. 
DC-DC Converters from Torex SemiconductorThe new XC9128/XC9129 Series of synchronous step-up DC-DC converters from Torex Semiconductor allow engineers to achieve efficient step-up circuits from input voltages as low as 0.8V. These two series are suitable for a variety of battery-powered portable and hand-held device applications, such as digital audio players, digital still cameras and video equipment. 
25V DirectFET® chipset optimized for high frequency, high efficiency DC-DC applicationsInternational Rectifier has introduced a 25V synchronous buck converter DirectFET® MOSFET chipset for point-of-load (POL) converter designs. 
TI launches PoE controller to optimise sub-13-W designsExpanding on the company's line of Power over Ethernet controllers, Texas Instruments Incorporated introduced today a 13-W PoE powered device controller with onboard DC/DC converter specifically designed to meet the needs of IEEE 802.3af-compliant applications. The new, highly-integrated device eases system design and size for PoE applications, including IP phones, IP security cameras, wireless access points, security card readers and RFID scanners, to name a few. 
Ultra Low Dropout Voltage Regulator from Torex SemiconductorNew from Torex Semiconductor is the XC6601, a 400mA high-speed voltage regulator with a built-in N-channel FET. With a dropout voltage of only 35mV at 100mA, the XC6601 is ideal for low dropout applications. 
TI battery charger for mobile phones, portable electronicsTexas Instruments has introduced today a 3-MHz, switch-mode battery charge management integrated circuit (IC) for portable electronics that can be charged from an adaptor or a USB port. The tiny 2 mm x 2 mm switching charger, the bq24150, significantly improves charge time, reduces power dissipation and cuts board space in half compared to typical implementation with linear chargers. 
Power management IC from AnalogicTechBy integrating six channels, featuring two buck converters, one with two step dynamic output voltage, with four LDOs, and independent enable functions, AnalogicTech's AAT2603 power management IC provides designers maximum design flexibility and power up sequencing while offering opportunity to reduce PCB space, improve reliability and reduce cost. Digital drivers from Semikron offer versatile power controlSemikron has announced a new generation of IGBT drivers based on full digital signal processing. The SKYPER 52 allows for the transmission of isolated control signals and a range of configurable protection schemes, enabling engineers to design without the need to add isolated circuitry. The result is fewer system components and improved overall system reliability. 
Single-phase high-voltage ICs from IRInternational Rectifier has released the IRS260xD family of single-phase high-voltage ICs (HVICs) for motor drive applications including air conditioners, fans, pumps, micro, mini and general purpose inverter drives. 
High current density buck regulators from Nu Horizons offer 12A in 7cm2Now available from Nu Horizons are what is said to be the world's highest current density buck regulators – Exar's PowerBlox range – enabling highly efficient designs in a small footprint. The PowerBlox family is also the widest input synchronous buck regulator series on the market. 
Synchronous Step-Down Regulator from Linear TechnologyLinear Technology has announced the -55°C to 125°C grade (MP-grade) version of the LTC3414 in a plastic TSSOP-20 package. The LTC3414 is a high efficiency, 4MHz synchronous buck regulator using a constant frequency, current mode architecture. It can deliver up to 4A of continuous output current at voltages as low as 0.8V. It operates from an input voltage of 2.25V to 5.5V, making it ideal for both single cell Li-Ion, or NiMH applications, as well as more general purpose fixed rail systems. 
Synchronous Step-Down DC/DC Converter from Linear TechnologyLinear Technology has announced the LTC3670, a 400mA, 2.25MHz, synchronous buck regulator and two 150mA LDOs packaged in a 2mm x 3mm DFN. The LTC3670's switching regulator and both LDOs are adjustable down to 0.8V, offering a very compact triple output converter for handheld applications. Its input voltage range of 2.5V to 5.5V makes it ideal for single cell Li-Ion powered applications. 32V Input Synchronous Step-Down Regulator from Linear TechnologyLinear Technology has announced the LTC3611, a high efficiency, synchronous buck regulator that delivers up to 10A of continuous output current at voltages as low as 0.6V. It operates from an input voltage of 4.5V to 32V (36V ABS Max), making it ideal for applications with multicell Li-Ion, lead acid batteries or fixed voltage rails up to 32V. 
I2C based LED driver IC from AnalogicTechMost smart phones today require some combination of backlight LED drivers for a main display, sometimes additional LED drivers for a smaller sub-display, one or more flash LED drivers, and LDOs to power the embedded camera. By rolling all these functions in various configurations into a single IC, AnalogicTech's AAT2860 allows designers to minimise component count, board space and cost whether they are building a high end PDA-type phone with a single large display or a traditional clamshell design with two displays. 
Synchronous Step-Down Regulator from Linear TechnologyLinear Technology has announced the LTC3602, a high efficiency, 3MHz synchronous buck regulator which uses a constant frequency, current mode architecture. It can deliver up to 2.5A of continuous output current at output voltages as low as 0.6V from a 4mm x 4mm QFN (or a thermally enhanced TSSOP-16) package. It operates from an input voltage of 4.5V to 10V, making it ideal for dual cell Li-Ion applications, as well as general purpose fixed rail systems. Its switching frequency is user programmable from 300kHz to 3MHz, enabling the utilization of tiny low cost capacitors and inductors. 
TI introduces 52-V boost controller for industrial and battery-powered systemsTexas Instruments Incorporated introduced today a 4.5V to 52V wide-input voltage boost controller, intended for industrial and battery-powered applications where the output is a regulated current instead of a regulated voltage. In addition, TI launched two integrated low-dropout regulators with internal protection circuits that simplify power design for industrial systems. 
600mA, 1.5MHz Synchronous Step-Down Regulator Now Offered in Military Plastic Temperature RangeLinear Technology has announced the Military Plastic grade (MP-grade) version of the LTC3404. The LTC3404 is a high efficiency, 1.4MHz synchronous buck regulator using a constant frequency, current mode architecture. It can deliver up to 600mA of continuous output current at voltages as low as 0.8V from a MSOP-8 package. It operates from an input voltage of 2.65V to 6V, making it ideal for both single cell Li-Ion, or NiMH applications, as well as general purpose fixed rail systems. With up to 95% efficiency and only 10uA of quiescent current, the LTC3404 is ideal for handheld applications which require maximum battery run-time. 
Digital high speed photocoupler in miniature packageToshiba Electronics Europe has launched a new miniature photocoupler that combines an isolation voltage rating of 3.75kV with switching speeds that are up to two and a half times faster than previously available devices. 
White LED driver from TIHelping display manufacturers meet demands for more efficient power technologies in displays, Texas Instruments (TI) has introduced an innovative, six-channel, 40-V white light emitting diode (LED) driver with a built-in, high-efficiency boost regulator and 1.5-A FET. The smallest LED driver to manage up to 60 white LEDs at once, the TPS61181 provides high power efficiency and accurate current regulation for medium-sized displays used in notebooks, portable GPS, industrial and medical applications. 
Switch Mode USB Power Manager from Linear TechnologyLinear Technology has announced the LTC3566, the latest in a family of compact next-generation, multi-function power management solutions for Li-Ion/Polymer battery applications. The LTC3566 integrates a switching PowerPath manager, a stand-alone battery charger, a 1A high efficiency synchronous buck-boost regulator, an ideal diode and controller, plus an always-on LDO, all in a compact, low-profile 4mm x 4mm QFN package. 
WLED drivers from AnalogicTechAnalogicTech has introduced the AAT2848, a trimode charge pump driver IC for white LED (WLED) backlight display and flash applications. By integrating four backlight channels capable of driving up to 30mA each with two flash channels capable of driving up to 300mA each, or 600mA in parallel, in a small 3mm x 3mm TQFN33-20 package, the device offers mid-range camera phone designers a highly attractive space-saving solution. 
Step-Down DC-DC Converter for Portable Applications from National SemiconductorNational Semiconductor has introduced what it says is the industry's smallest 4 MHz synchronous step-down DC-DC converter that provides up to a 1A output current over an input voltage range of 2.3V to 5.5V. The LM3691 DC-DC converter is optimized for powering high-performance processors from a single Li-Ion cell battery in mobile phones, personal media players and other mobile devices. A member of National's PowerWise® energy-efficient product family, the LM3691 features peak efficiency of 95 percent, low quiescent current to maximize battery life and output voltage precision of ±1 percent to power baseband and next-generation applications processors. 
High-Input voltage charger from IntersilIntersil has introduced the ISL9301. This high-input voltage battery charger can safely handle input voltages up to 28V. Superior overvoltage protection is achieved through the ISL9301's high input voltage and integrated overvoltage protection circuit that enables an automatic shutdown feature when input voltages exceed 10.5V during normal operation. 
Enhanced Rectifier Series from VishayVishay Intertechnology has announced a series of enhanced high-current-density PowerBridge rectifiers with current ratings of 10A to 25A and maximum peak reverse voltage ratings of 600V to 1000V. Compared to larger-size bridge rectifiers on the market, the advanced thermal construction of the PowerBridge devices allows heat to dissipate more efficiently. The PowerBridge rectifiers are thus able to provide the same power ratings as larger packages while requiring smaller heat sinks. 
2A flash driver IC capable of delivering high-intensity WLED lighting for camera phones from AnalogicTechThe AAT1282 from AnalogicTech is said to be the industry's first 2A flash LED driver IC capable of delivering high intensity light from white LEDs (WLEDs). Combining a high frequency boost converter with fixed input current limiting, dual output regulated current sinks and I2C control, the device uses a supercapacitor to deliver the high peak current needed to support the high intensity flash required for mobile phones featuring cameras with resolutions of 5 Megapixel and higher while protecting the battery. 
Compact high density integrated regulators for consumer applications from IRInternational Rectifier has expanded its SupIRBuck portfolio of versatile wide input, single output integrated point-of-load (POL) DC-DC voltage regulators with the introduction of the IR380x family for consumer embedded POL applications up to 14 amps. Size and feature set are optimized for high performance consumer applications, including set-top boxes, LCD TVs, game consoles, desktop PCs and graphics cards. 
AC-DC switched-mode power conversion ICs from Power IntegrationsPower Integrations has announced the introduction of its LinkSwitch-II family of highly integrated AC-DC switched-mode power conversion ICs with very accurate primary-side control. LinkSwitch-II dramatically simplifies constant-voltage, constant-current (CV/CC) converters, and enables consumer products to meet all worldwide energy-efficiency and no-load regulations, such as ENERGY STAR 2.0 for external power supplies. The new ICs are ideal for applications such as chargers for cell phones and cordless phones, high brightness LED drivers and other accurate CV or CC applications. 
DC-DC regulator range from Nu Horizons maximises available board spaceNu Horizons announces the availability of a range of point of load DC-DC regulators. Linear Technology's new generation of POL regulator modules include all the circuit components encapsulated in such a tiny size that they resemble a surface mount IC. These high-end point-of-load regulators are complete solutions containing the DC-DC controller, MOSFETs, inductor, input and output bypass capacitors and compensation circuitry in only 225mm2, maximising available board space. The single package regulator range also improves electrical and thermal performance. 
Synchronous Boost Regulator with Output Disconnect and LDO in a 3mm x 3mm QFNLinear Technology has announced the LTC3537, a 2.2MHz, current mode synchronous boost DC/DC converter with integrated output disconnects plus an LDO. The LTC353''s boost converter's internal 600mA switches can deliver output voltages as high as 5.25V from an input voltage range of 0.68V at start-up (0.5V when running) to 5V, making it ideal for Li-Ion/Polymer or single/multicell alkaline/NiMH applications. 
TI powers 2.5in portable displays with new organic LED driverTexas Instruments (TI) introduced today an organic light emitting diode (OLED) power driver designed to enhance image quality for small form factor displays up to 2.5 inches. The TPS65136 power integrated circuit supports active matrix OLED (AMOLED) displays used in mobile phones, digital cameras and portable media players. 
Five-Channel Voltage Supervisor from Catalyst Semiconductor Reduces System Costs and Board SpaceCatalyst Semiconductor has announced a five-channel device that gives designers high reset threshold accuracy and very low power consumption for monitoring the power supply (Vcc) status of a microprocessor, microcontroller, ASIC or other system processor. The new CAT885 lowers system costs and saves board space by integrating five channels into a single, small MSOP 8-lead package. 
Current-sourced WLED drivers address lighting needs of entry-level cell phone marketAnalogicTech has introduced the AAT3102 and AAT3103 constant frequency, charge-pump-based, current source white LED (WLED) drivers. Designed to backlight lower-cost LCD displays in entry-level and reduced feature set cell phones, the two new devices help reduce system costs by using a small 2x2.1-mm package while requiring only two external components. 
Step-Down DC/DC Converter with Linear Controller in 3mm x 3mm DFN from Linear TechnologyLinear Technology has announced the LT1939, a 2A, 25V step-down switching regulator and a linear controller in a 3mm x 3mm DFN package. The LT1939 operates from a VIN range of 3V to 25V, making it suitable for regulating power from a wide variety of sources, including protected automotive batteries, industrial supplies and unregulated wall adapters. Its 2.3A internal switch can deliver up to 2A of continuous output current at voltages as low as 0.8V. 
2.4MHz Step-Down DC/DC Converter in 3mm x 3mm DFNLinear Technology has announced the LT1913, a 3.5A, 25V step-down switching regulator packaged in a 3mm x 3mm DFN. The LT1913 operates within a VIN range of 3.6V to 25V, making it suitable for regulating power from a wide variety of sources, including protected automotive batteries, industrial supplies and unregulated wall adapters. Its 4.6A internal switch can deliver up to 3.5A of continuous output current at voltages as low as 0.79V. 
Step-Down DC/DC Converter Delivers Independent 800mA Outputs from a 3mm x 3mm QFNLinear Technology has announced the LTC3545, a triple channel, high efficiency, 2.25 MHz, synchronous buck regulator that delivers up to 800mA of output current from each channel from a 3mm x 3mm QFN package. Using a constant frequency, current mode architecture, the LTC3545 operates from an input voltage range of 2.25V to 5.5V, making it ideal for single cell Li-Ion/polymer, or multicell alkaline/NiCad/NiMH applications. 
High-Resolution Brightness LED Drivers for Enhanced LCD Backlight ControlCatalyst Semiconductor continues to expand its line of patented, Quad-Mode fractional charge pump LED drivers with two new high-resolution brightness devices, featuring 32-dimming levels to provide enhanced LCD backlight control in emerging portable product applications. The new CAT3647 and CAT3648 address the need for high-resolution LCD control and longer battery life in cell phones, digital cameras and other handheld devices, where designers constantly need to balance higher performance features with longer battery life. 
TI improves full-colour video panel displays with 16-bit, 16-channel LED driverTexas Instruments Incorporated introduced today a 16-channel, 50 mA constant-current sink LED driver, with an input voltage of up to 17 V. The TLC5943's integrated enhanced spectrum pulse-width modulation improves image quality and reduces flicker noise in monochrome, multicolor and full-color LED displays, as well as LED signboards and display backlighting. 
2 amp step-down converter meets portable systems rising power needsWhether building new Portable Navigation Devices (PNDs), Portable Media Players (PMPs) or high-end handsets, today's system designers must constantly add new features and functions that require higher levels of processing power and more current. By delivering up to 2A at high efficiency in a small solution, AnalogicTech's AAT1153 step-down converter serves as a key building block in the continual evolution of higher performance yet compact handheld systems. 
Triple-output stepdown switching regulator ICThe new A4490 from Allegro MicroSystems Europe is a triple-output stepdown switching regulator integrated circuit providing three high-current outputs that are adjustable from 0.8 V to 5 V with a maximum current of 2 A. 
New Power Amplifier from SiGe Semiconductor Boosts Performance of Wi-Fi systemsSiGe Semiconductor, Inc. today announced a new power amplifier designed to optimize performance of Wi-Fi systems including access points, personal computers and PC cards. 
Analog Devices Multi-Voltage Monitors and Sequencers Deliver Industry Leading AccuracyAnalog Devices, Inc. is expanding its power management offerings with the industry's most accurate low-voltage monitoring and sequencing ICs. Leveraging ADI's precision analogue design techniques, the new ADM1184 and ADM1186 quad voltage-monitor and sequencer ICs are twice as precise as competing devices, offering best-in-class accuracy (<±0.8%). 
Toshiba launches 200mA LDO regulators with high ripple rejection and low output noise for ultra-stable output voltageToshiba Electronics Europe has expanded its family of low drop out (LDO) voltage regulators with a new series of CMOS devices that offer high ripple rejection ratio, low quiescent current, and very low output noise voltage. 
NEC Electronics Europe Announces New High Temperature Optocoupler DevicesNEC Electronics Europe has introduced new transistor output optocouplers with guaranteed operation up to 110degC ambient temperature. The extended temperature range make them ideal for applications such as switched mode power supplies and factory equipment, and all applications where components are packed densely. 
USB Power Manager & Li-Ion Battery Charger Delivers 700mA to System LoadLinear Technology has introduced the LTC4098, an autonomous high efficiency power manager, ideal diode controller and battery charger for portable USB powered devices such as media players, digital cameras, PDAs, personal navigators and smart phones. The LTC4098's switching topology features PowerPath™ control which seamlessly manages power flow between a wall adapter or USB port and the device's Li-Ion/Polymer battery while preferentially providing power to the system load. 
TI boost controller drives industrial lighting innovationTexas Instruments has introduced a 4.5 V to 52 V wide-input voltage, non-synchronous boost controller, intended for applications where the output is a regulated current instead of a regulated voltage. The new TPS40211, demonstrated at the Light+Building Frankfurt show (April 6 – 11, 2008) at the "LED Light for you (LLFY) – powered by OSRAM" booth (Hall 4.1 / D31), allows designers to efficiently manage LED lighting, industrial control and battery-powered systems. 
500kHz Step-Down DC/DC Converter in 3mm x 3mm DFNLinear Technology has announced the LT1912, a 2A, 36V step-down switching regulator packaged in a 3mm x 3mm DFN (or MSOP-10E). The LT1912's 3.6V to 36V input voltage range makes it ideal for load dump and cold-crank conditions found in automotive applications. Its 3.2A internal switch can deliver up to 2A of continuous output current to voltages as low as 0.79V. 
Battery charger IC protects against faulty input voltagesToday many manufacturers of cellular handsets, Bluetooth headsets, MP3 players and other portable systems require over-voltage protection to protect the battery and system against faulty inputs. By integrating an isolated OVP switch, AnalogicTech's AAT3783 Li-Ion/Polymer battery charger offers protection against single point failures up to 28V while reducing component count and simplifying design. 
16-channel LED driver IC with serial input/output interfacingThe A6282 from Allegro MicroSystems Europe is a 16-channel LED driver IC with serial data inputs and outputs which allow easy cascading in large-scale display applications. The new device includes an input shift register, data latches, and 16 constant-current sink drivers delivering up to 50 mA per channel at 12 V. The CMOS shift registers and latches allow direct interfacing with microprocessor-based systems with supply voltages of 3.3 to 5 V. 
Power management solutions for Li-Ion/Polymer battery applicationsLinear Technology has announced the LTC3556, the latest in a family of smaller next-generation, multi-function power management solutions for Li-Ion/Polymer battery applications. The LTC3556 integrates a switching PowerPath™ manager, a stand-alone battery charger, an ideal diode, I2C control, a synchronous buck-boost regulator, two high efficiency synchronous buck regulators plus an always-on LDO, all in a compact, low-profile 4mm x 5mm QFN package. 
LED Driver provides Independent Control Of 18 LEDs with Low Noise and up to 91% EfficiencyLinear Technology has announced the LTC3220/-1, an inductorless, low noise, high efficiency LED driver for cell phone displays and other programmable lighting applications. The IC provides 18 individually configurable LED current sources for complete flexibility in programming multiple displays. The display currents are set via a precision internal current reference. The universal current sources can be digitally controlled with independent dimming, brightness, blinking, and gradation control, programmable via a simple two-wire I2C serial interface; LTC3220 and LTC3220-1 each offer a unique I2C address. 
High-Voltage LDOs from MicrochipMicrochip announces MCP1790 and MCP1791 high-voltage linear regulators (LDOs). With a continuous 70 mA output, the ability to operate at a continuous input voltage of up to 30V and load-dump protection up to 43.5V, the new LDOs are ideal for automotive and industrial applications. They also feature low quiescent current, low shutdown current and ceramic capacitor stability, which enable smaller, ultra-efficient designs at lower costs. 
Dual 2.2MHz Synchronous Boost Regulator with Output Disconnect in a 3mm x 3mm QFNLinear Technology has announced the LTC3527/-1 dual output 2.2MHz, current mode, synchronous boost DC/DC converters with integrated output disconnect. Their internal 800mA and 400mA switches can deliver output voltages as high as 5.25V from an input voltage of 0.70V (0.5V when running), up to 5V, making them ideal for Li-Ion/Polymer or single-multicell alkaline/NiMH applications. The LTC3527/-1 can deliver up to 200mA and 100mA of continuous output current (at 3.3V) from a single alkaline cell or 400mA and 200mA from dual cells. 
Dual Output 100% Duty Cycle High Output Voltage Step-Down or Current Source DC/DC ControllerLinear Technology has announced the LT3742, a 100% duty cycle dual output step-down switching regulator DC/DC controller that produces output voltages up to 30V for applications including stepper motors, industrial controls, automotive, distributed power and telecom systems. The LT3742 can also be configured with one side as a step-down voltage regulator and the other a Super Capacitor charger (current source) for capacitor values up to several farads, a useful feature in robotic applications when longer hold-up times are needed or where high peak currents are required. 
Automotive-grade 3-phase motor-control ICs with built-in commutation logicThe new A3930 and A3931 from Allegro MicroSystems Europe are automotive-grade motor controller integrated circuits with built-in commutation logic to lessen the burden on the system microprocessor, simplifying system design and reducing cost. The new devices are ideally suited to the control of Hall-commutated 3-phase brushless DC motors driven by external N-Channel MOSFETs. If desired, the Hall sensor inputs can be driven directly by a microprocessor, which makes the A3930 and A3931 key components in a robust sensorless back-EMF solution. 
Ultralow Quiescent Current High Power Step-Down DC/DC ControllerLinear Technology has announced the LTC3834/-1, a synchronous step-down DC/DC controller, featuring the industry's lowest quiescent current. Drawing only 30uA in sleep mode, the LTC3834/-1 is ideal for preserving battery energy in always-on automotive systems or battery-powered devices where the system remains semi-active, or when a car's engine is off. When in shut down mode, the LTC3834/-1 draws a mere 4uA. 
Tiny 400-mA low-power DC/DC converter for portable designs from Texas InstrumentsTexas Instruments has introduced a space-saving, 400mA step-down converter for portable designs. The 95-percent efficient converter extends battery life in mobile phones, portable navigation systems and low-power DSP and microcontroller applications. TI's TPS62270 synchronous DC/DC converter efficiently regulates output voltages down to 0.9 V with ±1.5 percent accuracy, enabling the device to power TI's newest C5000 DSPs, low-power MSP430 microcontrollers and controllers with ultra-precise processor core supply requirements. 
LED Driver Offers 10% Higher Efficiency and Easy Interface Control for Portable Device BacklightingCatalyst Semiconductor has expanded its line of patented Quad-Mode fractional charge pump LED drivers with a new device optimized for portable products. The new CAT3637 addresses the requirements for high-efficiency and easy LED programming in portable products, with 10 percent higher efficiency (compared to three-mode charge pumps) and a simple, 1-wire EZDim interface control. Power Integrations Supports Low-Profile Trend in Consumer Electronics Power Supplies With eSIP Power PackagePower Integrations has announced the availability of its TOPSwitch-HX series of AC-DC power conversion ICs in the new eSIP-7C Eco-Single-Inline-Package. This package exhibits the same low thermal impedance as the traditional TO-220, yet stands less than 10mm above the PCB - half the height of the 45 year old package design. eSIP-based designs reduce the overall height of the power supply in support of increasing market demand for slimmer electronic products such as LCD monitors, flat screen TVs and set-top boxes. 
1A & 2A DC/DC uModule Pin-Compatible Regulators Make Upgrading EasyLinear Technology has introduced the LTM8022 and LTM8023, 1A and 2A high voltage DC/DC uModule regulator systems, respectively, with up to 36V (40Vmax) input voltage and up to 10V output voltage. The 10V output voltage range is ideal for 9.6V intermediate bus systems and the 36V input provides sufficient input protection in 24V and 28V systems. These are the newest members of Linear's LTM802x family of high-voltage uModule regulators. 
Device delivers low power loss with low EMI in 40 percent smaller packageInternational Rectifier has introduced the iP2005A, a fully optimized power stage solution for high current synchronous buck multi-phase converters used in gaming, computing and communications applications. It is 40 percent smaller in size compared to the previous generation device while its efficient operation up to 1.5MHz allows designers to further reduce board space by minimizing the value of output capacitors and inductors. 
DC/DC Regulator Is as Simple as a Linear Regulator But with 98% Less Heat Dissipation and 90% Smaller Design Without Hot SpotsLinear Technology has introduced the LTM8020, the first in a new family of DC/DC uModule regulator systems that operate from higher voltage input supplies of up to 36V (40Vmax). The LTM8020 is a 200mA complete DC/DC solution that includes a DC/DC controller IC, power switches, inductor, compensation circuitry and input and output bypass capacitors. This solution is extremely compact at only 6.25mm x 6.25mm and low profile at 2.3mm in height. 
Leadless MOSFET said to reduce footprint by 50%Zetex Semiconductors has announced its first MOSFET to be packaged in the leadless 2mm x 2mm DFN package. With a PCB footprint 50% smaller than industry standard SOT23 packaged devices and an off-board height of just 0.85mm, the ZXMN2F34MA will benefit a range of space-starved switching and power management applications, such as external switches in buck/boost PoL converters, where PCB footprint, thermal performance and low threshold voltage are of prime importance. 
97% Efficient, Buck-Boost DC/DC Regulator Operates with up to 36VIN & 24VOUT without Hot SpotsLinear Technology has introduced the latest device in its family of DC/DC uModule regulator systems that can regulate an output voltage from a variable input voltage greater than, less than or equal to the output voltage. The LTM4607 is designed for higher voltage systems and operates from 4.5VIN to 36VIN, regulates an output voltage from 0.8V to 24V, and delivers output power up to 190W. 
Buck-Boost DC/DC uModule Regulator Dissipates Less than 2.4W at 60WOUT without Hot SpotsLinear Technology has extended its family of DC/DC uModule regulator systems with products that can regulate an output voltage from a variable input voltage greater than, less than or equal to the output voltage. The LTM4605 is the first device in a new family of buck-boost products and operates from 4.5VIN to 20VIN, regulates an output voltage from 0.8V to16V and delivers an output power up to 150W. 
Real-time Power Monitoring IC Accurately Captures Highly Dynamic Power Information and Maximizes System PerformanceInternational Rectifier has introduced the versatile IR3721 output power monitor IC for low-voltage DC-DC converters used in notebook, desktop computers, and energy-efficient server applications. The IR3721 utilizes IR's patent-pending TruePower technology to accurately capture highly dynamic power information with 2.5 percent accuracy at 65°C. 
Analog Devices' Digital Power Architecture Accelerates Design of Energy-Efficient, Intelligent Power SuppliesAnalog Devices is introducing a digital power controller developed specifically for power design engineers designing ac-to-dc and isolated dc-to-dc power supplies used in high-reliability server, storage, and communications infrastructure equipment. ADI's ADP1043 digital PWM (pulse-width modulation) power control and management device provides designers with a highly integrated circuit architecture and the flexibility to configure system power-supply parameters in a matter of minutes using an intuitive GUI (graphical user interface). Catalyst Granted Patent on Switching Architecture for “Greener” High-Power LED Lighting ProductsCatalyst Semiconductor has announced it has received a patent for a unique step-down switching regulator circuit architecture applicable to step-down regulators for driving high brightness LEDs. The patent, titled "LED current bias control using step-down regulator" (patent number 7,323,828), was developed to simplify the design of high brightness LED lighting in emerging household, commercial and automotive lighting applications. 
Three-channel step-down converters in a single monolithic ICAnalogicTech has introduced two mini-Power Management Units (PMUs) that combine three step-down DC/DC converters in a single monolithic IC. Targeted at portable devices with rapidly evolving feature sets, the 3-channel AAT2784 and AAT2785 allow designers to add one 1.5A synchronous step-down converter and two 300mA synchronous step-down converters or one 1.5A synchronous step-down converter and two 600mA synchronous step-down converters respectively, without radically altering their existing core system design or adding numerous discrete devices. 
48V Buck Mode LED Driver Powers Ten 50mA LEDsLinear Technology has announced the LT3590, a 48V, buck mode DC/DC converter designed to operate as a constant-current LED driver. An internal 55V, 80mA switch and Schottky diode enable it to drive up to ten 50mA LEDs in a single series string from a 48V input, making it ideal for industrial and LED signage applications. 
Automotive-grade high-brightness constant-current LED driver ICThe new A6260 from Allegro MicroSystems Europe is a high-brightness constant-current LED driver IC which is designed to operate over the typical automotive voltage and temperature ranges. The input voltage range of the A6260 is specified down to 6 V, and the device will operate at up to 40 V. The linear constant-current output can be adjusted to deliver up to 350 mA in a typical application. TI introduces tiny USB power management switches with adjustable current limitTexas Instruments Incorporated introduced today power distribution switches with an integrated FET that can be set to support a 100-mA to 1.1-A current limit range for a standard USB port or other applications requiring a current limited switch. The power management integrated circuit (IC) efficiently protects an input voltage supply against potential short-circuit conditions that may occur when using a USB connection in a mobile phone, notebook computer, LCD TV, set-top box, gaming system or IP phone. 
TI introduces precision power operational amplifier for high-voltage applicationsTexas Instruments Incorporated today introduced a precision power operational amplifier which operates on supplies up to 100V and delivers a high output current of ±50mA with a 150mA short circuit limit. The driving force for the OPA454 design was high-voltage test equipment, which requires a combination of high voltage with high DC accuracy and significant speed. Hence, the OPA454 is an attractive option for a wide range of precision op amp applications, including optical communications, industrial control, data acquisition and power supplies and regulators. 
24V Input Synchronous Step-Down Regulator Delivers 12A from a 9mm x 9mm QFNLinear Technology has announced the LTC3610, a high efficiency, synchronous buck regulator which can deliver up to 12A of continuous output current at voltages as low as 0.6V. It operates from an input voltage of 4V to 24V (28V ABS Max), making it ideal for applications with multicell Li-Ion, lead acid batteries or fixed voltage rails up to 24V. Its valley current control architecture delivers very low duty cycle operation at high frequencies with excellent transient response. The operating frequency is set by an external resistor. Switching frequencies of up to 1 MHz allow the utilization of small, low cost ceramic capacitors and low profile inductors. 
Step-Down DC/DC Converter with Linear Controller in 3mm x 3mm DFNLinear Technology has announced the LT3500, a 2A, 36V step-down switching regulator and a linear controller in a 3mm x 3mm DFN package. The LT3500 operates from a VIN range of 3V to 36V (40VMAX), making it ideal for load dump and cold-crank conditions found in automotive applications. Its 2.3A internal switch can deliver up to 2A of continuous output current at voltages as low as 0.8V. 
Step-Down DC/DC Converter in 3mm x 3mm DFNLinear Technology has announced the LT1938, a 2.2A, 25V step-down switching regulator packaged in a 3mm x 3mm DFN. The LT1938 operates within a VIN range of 3.6V to 25V, making it ideal for 12V and unregulated wall transformer inputs. Its 3.1A internal switch can deliver up to 2.2A of continuous output current at voltages as low as 1.265V. 
1A Buck-Boost, 600mA Buck Dual Synchronous DC/DC ConverterLinear Technology has announced the LTC3520, a dual channel, 2MHz synchronous converter. One channel utilizes a synchronous buck-boost topology which can deliver up to 1A of continuous output current with inputs above, equal, or below the output. In single cell Li-Ion applications requiring a 3.3V output, the buck-boost topology can enable over 25% longer battery run-times compared to a standard buck converter. 
Triple output DC-DC power converter design platform simplifies satellite power designInternational Rectifier has introduced the Mx series triple output DC-DC power converter design platform for space applications powering specific RF communication satellite applications. The Mx series offers industry-leading space ruggedness and low noise power performance in an open board assembly construction. 
16-Channel LED Driver Offers 5000:1 True Color PWM DimmingLinear Technology has announced the LT3595, a 45V 2MHz DC/DC buck mode converter designed to operate as a 16-channel constant current LED driver. Each channel of the LT3595 can drive up to ten 50mA LEDs in series, enabling the LT3595 to drive up to 160 50mA LEDs while delivering efficiencies up to 92%. Its multichannel capability makes it ideal for large TFT-LCD backlighting applications. Each of the 16 channels is independently operated and can be dimmed to ratios as high as 5000:1. 
White LED driver simplifies large display design for portable electronicsAnalogicTech has introduced the AAT1239-1, a high frequency, high efficiency constant current boost converter capable of driving up to10 white LEDs (WLEDs) connected in series. Designed for backlight applications in PNDs, eDictionaries, electronic photo frames and cellular handsets, the new driver IC uses AnalogicTech's proprietary Simple Serial Control (S2CWire) single-wire interface to dramatically reduce the display flicker that occurs with commonly-used low frequency PWM control schemes. 
Industry-Standard Voltage Supervisors from CatalystCatalyst Semiconductor expanded its supervisor product line with the addition of three new devices. The new CAT705, CAT706 and CAT813 voltage supervisors give designers industry-standard performance for monitoring the power supply (Vcc) status of a microprocessor, microcontroller, ASIC or other system processor. The CAT706 has a threshold voltage of 4.40V and the CAT705 and CAT813 have a threshold voltage of 4.65V. 
Single-Inductor Low VIN Buck-Boost DC/DC Controller Optimized for Medium Power OutputsLinear Technology has introduced the LTC3785, a 96% efficient buck-boost switching regulator controller that operates from input voltages above, below or equal to the output voltage for powering tablet PCs, handheld instruments, wireless modems, portable media players and a wide variety of single or dual-cell Li-Ion or multi-cell alkaline/NiMH powered devices. 
2.4MHz Step-Down DC/DC Converter in 3mm x 3mm DFN or MSOP-10E PackageLinear Technology has announced the LT3693, a 3.5A, 36V step-down switching regulator packaged in either a 3mm x 3mm DFN or MSOP-10E. The LT3693 operates within a VIN range of 3.6V to 36V, making it ideal for both load dump and cold-crank conditions found in automotive applications. Its 4.6A internal switch can deliver up to 3.5A of continuous output current at voltages as low as 0.79V. The LT3693's switching frequency is user programmable from 200kHz to 2.4MHz, enabling the designer to optimize efficiency while avoiding critical noise-sensitive frequency bands while keeping externals small. The combination of its high switching frequency and tiny 3mm x 3mm (or MSOP-10E) package ensure a very compact solution foot print. 
2.5MHz Boost/Inverter DC/DC Converter with 2A/42V Switch & SynchronizationLinear Technology has announced the LT3580, a current mode, fixed frequency step-up DC/DC converter with an internal 2A, 42V switch. It operates from an input voltage range of 2.5V to 32V, making it suitable for applications with input sources ranging from a single-cell Li-Ion to automotive inputs. The LT3580 can be configured as either a boost, SEPIC or an inverting converter. Its switching frequency can be programmed, via a single resistor or synchronized to an external clock, between 200kHz and 2.5MHz, enabling designers to minimize external component sizes and to avoid noise critical frequency bands. The combination of a 3mm x 3mm DFN package (or MSOP-8E) and tiny externals ensures a very compact footprint while minimizing solution cost. 
Step-down converter helps backplane-based equipment designersAnalogicTech has introduced the AAT1160, a synchronous step-down DC/DC converter delivering up to 3A output from a 12V input. Combining high power efficiency levels and a very low 150 microamps quiescent current, the AAT1160 offers power savings in a variety of industrial applications, especially those using backplanes, as well as portable systems running off two-cell Lithium-ion batteries. 
Rail-to-Rail Input 3GHz Fully Differential ADC DriverLinear Technology has announced the LTC6406, a high-speed with low power ADC driver, low distortion and noise. It features a rail-to-rail input stage and an independently adjustable output common mode range. Using a single 3V supply, the LTC6406's differential outputs each swing from near ground to 2V. As a result, this amplifier is ideal for level shifting signals to match the input range of 12-bit to 16-bit single supply differential input ADCs. 
Multiphase Step-Down DC/DC Controller with Differential Output Voltage Sensing & PLLLinear Technology has introduced the LTC3811, a dual output synchronous step-down DC/DC controller with multiphase operation, differential output voltage sensing and integrated phase-lock loop (PLL) synchronization. Up to 12 phases can be paralleled and clocked out-of-phase to minimize the input and output filtering requirements for high current applications (up to 200A). The differential amplifier provides true remote output voltage sensing, enabling high accuracy regulation where IR losses occur through vias, trace runs and interconnects. Applications include high current ASIC supplies, power distribution buses, high power audio amplifiers and network servers. 
New 8-Channel Constant-Current LED Driver Targets Large LED Video DisplaysCatalyst Semiconductor has expanded its recently introduced family of large LED video display drivers with the new CAT4008, an 8-channel, constant-current sink LED driver for billboard, marquee, instrument and other large, general-purpose LED displays. The CAT4008 joins Catalyst's CAT4016, 16-channel, constant-current LED driver introduced in October 2007. 
Dual-input, single-output power supply selector switchDesigners of digital photo frames, mobile phones, set-top boxes and many other electronic devices typically resort to discrete switches when they need to support more than one power source. By combining two inputs with a low, 200mV dropout in a compact TSOPJW package, AnalogicTech's AAT4674 and AAT4674-1 offer high system integrity in a smaller, more integrated solution size. 
NEC Electronics Europe extends its portfolio of P-channel PowerMOSFETsNEC Electronics Europe today announced that it has extended its portfolio of low-voltage power management devices (PMD). The new devices close the -15 A to -100 A drain current gap in the P-channel NP-Series. 
High-Quality PWM Digital Power Amplifier from STMicroelectronics Adds 100W per Channel Capability to Full Flexible Amplification (FFX) FamilySTMicroelectronics today announced a new digital power amplifier, the STA510F, within its digital power stage family of high-quality single-chip audio solutions, which is capable of driving up to 100 watts per channel of audio into stereo 8-ohm loads. The device will also drive 4 x 50W into 4 ohms, or up to 200W in a mono-aural configuration. 
35W Power over Ethernet PD Controller with Synchronous NoOpto Flyback Controller Bridges the PoE+ GapLinear Technology has introduced the LTC4268-1, a Power over Ethernet (PoE) interface controller with a synchronous, current mode, switching regulator for delivering precise regulation and high efficiency to power-hungry Powered Devices (PDs). The LTC4268-1 provides up to 35W for 2-pair systems and as much as 70W for 4-pair systems. As the momentum for PoE continues to grow, the LTC4268-1 bridges the gap to enable development of innovative high-power PoE devices in anticipation of the evolving PoE+ (IEEE 802.3at) standard. 
Single Supervisor Monitors 27 Unique Voltage Thresholds Without External ResistorsLinear Technology has introduced the LTC2915, a single voltage supervisor with 27 unique pin-selectable thresholds, offering designers a diverse voltage monitor for many different solutions. Rather than qualifying and stocking multiple individual supervisors, each with their own unique voltage threshold, a single LTC2915 can easily be configured to meet different monitoring tasks. The LTC2915 can be used in applications ranging from network servers monitoring 12V to low-voltage portable equipment. The 27 selectable thresholds are specified with an overall accuracy of ±1.5% without the need for costly 0.1% external resistors. Offered in low-profile (<1mm) 8-lead TSOT-23 and 3mm x 2mm DFN packages, with guaranteed specifications across the -40°C to +125°C temperature range, the LTC2915 is ideal for automotive monitoring, handheld devices, optical networks, and general purpose voltage monitoring. 
Boost Converter manages multiple high-brightness LEDsTexas Instruments has introduced a high-brightness LED driver with an integrated 40V, 1.2A switch that can drive up to three 1W LEDs in series. The new TPS61165 device's high-performance features and input voltage range of 3 to 18V allow designers to efficiently manage multiple high-power LEDs used in single-cell, battery-powered applications or point-of-load designs with a 9 or 12V bus. 
DC/DC Converter Offers Extended Battery Run Time for Li-Ion Powered HandheldsLinear Technology has announced the LTC3538, a synchronous buck-boost converter that can deliver a regulated output voltage at up to 800mA of continuous current with an input voltage above, below or equal to the output. Its input range of 2.4V to 5.5V and output range of 1.5V to 5.25 makes it ideal for single cell Li-Ion/Polymer applications. The LTC3538 provides a smooth continuous transfer through all of the operating modes, making it ideal for applications that must maintain a constant output voltage even as the battery voltage declines below the output. 
International Rectifier’s latest device simplifies design of high efficiency POL buck convertersInternational Rectifier has introduced the iP1206, a fully optimized solution for synchronous buck applications including telecom and networking equipment. The iP1206 is the latest addition to the iPOWIR integrated power conversion stage product line, designed for two-phase single output applications up to 30 amps or dual independent outputs up to 15 amps. Both options utilize synchronized 180 degree out-of-phase operation, reducing input current ripple and input voltage ripple. The device is comprised of an optimized power stage and a full function PWM Control IC to achieve high power density. 
Tiny USB PowerPath Manager Withstands 60V InputsLinear Technology has introduced the LTC4090, an autonomous linear PowerPath manager, ideal diode controller and stand-alone high input voltage battery charger for portable USB devices. For high efficiency charging, the switching front-end topology accommodates various inputs, including high voltage power sources up to 38V (60V max withstand capability) such as 12V regulated/unregulated AC-DC wall adapters, FireWire ports or automotive power. In addition, the IC accepts low-voltage power sources such as 5V wall adapters, USB ports and single-cell Li-Ion/Polymer batteries. 
Battery charger IC for single and dual cell applicationsAnalogicTech has introduced the AAT3663, the first in a family of 1A linear battery charger ICs capable of charging up to two Li-ion cells in series. Designed to operate from either an AC adapter or a USB port, the device features AnalogicTech's innovative Digital Thermal Loop charge reduction circuit that monitors the internal die temperature and gradually steps down the charge current to avoid thermal shutdown. 
Surface Mount LDO is Easily Paralleled for heat spreadingLinear Technology has announced the LT3080, a 1.1A 3-terminal LDO that may be easily paralleled for heat spreading and is adjustable with a single resistor. This new architecture regulator uses a current reference to allow sharing between multiple regulators with a small length of PC trace as ballast, enabling multi-amp linear regulation in all surface-mount systems without heat sinks. 
Catalyst Launches Alternative to Industry-Standard ’604 LED DriverCatalyst Semiconductor has introduced its newest Quad-Mode fractional charge pump LED driver, the CAT3604V – a four-channel LED driver, which provides an alternative to the industry-standard '604 with similar functionality and the added benefits of Catalyst's patented Quad-Mode switching architecture, including improved average efficiency. 
White LED drivers integrate LDOsAnalogicTech has introduced the AAT2847, a highly integrated four-channel White LED (WLED) driver for portable systems operating off a single-cell Li-Ion/Polymer battery. The charge pump-based device also integrates two 200mA Low Dropout (LDO) linear regulators, each with its own independent enable pin, to power ancillary system functions. 
Li-Ion / Li-Polymer Chargers with Auto Power-Source SelectionMicrochip has introduced the MCP73837 and MCP73838 dual-input, high-current Li-Ion / Li-Polymer charge-management controllers with automatic USB or AC adapter power-source selection. Auto power-source selection from either a USB port or an AC adapter provides the user with increased flexibility for rechargeable battery applications. 
40-V Boost Converter with Integrated 1.2-A Switch from TITexas Instruments has introduced a tiny, high-voltage boost converter with an integrated 40-V, 1.2-A FET and a wide input-voltage range of 3-V to 18-V. The high-efficiency device supports boost, SEPIC (single-ended primary inductor converter) and flyback topologies, which are used to regulate single or dual Li-Ion battery inputs. Available in a 2 mm x 2 mm QFN package, the converter simplifies design in industrial or medical point-of-load applications, such as 5-V to 12-V or 12-V to 24-V systems. 
Power MOSFETs from NEC are robustNEC Electronics Europe has announced it has extended its portfolio of low-voltage power management devices (PMD). Part of the NP-Series, the new MOSFETs feature improved ruggedness, with respect to avalanche capability and channel temperature, combined with low values for on-state resistance (RDS(on)) and input capacitance (Ciss). Devices with two VDSS ratings (40 V and 55 V), two ID (DC) ratings (90 A, 100 A) and logic/non-logic gate drive types are available in three popular packages, TO-220, TO-262 and TO-263ZP. All 24 devices are fully AEC-Q101 and RoHS compliant. 
DC/DC Regulator Has 2.3mm Profile and Tiny FootprintLinear Technology has introduced a new DC/DC uModule regulator that operates from lower voltage input supplies and occupies only 1.35cm2 of board area. The LTM4604 is the latest device in the LTM4600 family, and is a complete 4A regulator system with onboard controller, power switches, inductor and bypass capacitors enclosed and protected in an 9mm x 15mm LGA package. This DC/DC uModule regulator has a profile (height) of only 2.3mm and weighs a mere 0.86g. The device operates from an input supply range of 2.35V to 5.5V, regulates an output voltage from 0.8V to 5V, and achieves 93% efficiency when converting a 3.3V input to 2.5V output at up to 4A. 
Multiple-output standard buck ICs from IntersilIntersil has introduced a pair of multiple-output standard buck ICs that integrate critical power management functions to lower the number of components and save valuable board space. The triple and dual output regulators provide a single, high-efficiency power solution for a variety of point-of-load (POL) applications. 
Integrated DC-DC Regulators Simplify Embedded Power Designs Says IRInternational Rectifier, has introduced the SupIRBuck family of wide input, single output synchronous buck voltage regulators for high density, high performance data center and consumer applications. The IR38xx SupIRBuck family of point-of-load (POL) voltage regulators integrates IR's benchmark HEXFET trench technology MOSFETs and a high performance synchronous buck control IC in a compact 5mm by 6mm Power QFN package, shrinking the silicon footprint by 70 percent compared to discrete solutions, and offering between 8 to 10 percent higher full-load efficiency than competing monolithic ICs. 
4 MHz Synchronous Step-Down DC/DC Converter Delivers Up to 1.8ALinear Technology has announced the LTC3568, a high efficiency, 4MHz, synchronous buck regulator that delivers up to 1.8A of continuous output current from a 3mm x 3mm DFN package. Using a constant frequency and current mode architecture, the LTC3568 operates from an input voltage range of 2.5V to 5.5V, making it ideal for Li-Ion/Polymer battery inputs as well as 3.3V or 5V inputs for point-of-load applications. It can generate output voltages as low as 0.8V, enabling it to power the latest generation of low voltage DSPs and microcontrollers. Its switching frequency is programmable from 850kHz to 4MHz, enabling use with tiny, low cost ceramic capacitors and inductors less than a 1mm in height, providing a highly compact solution footprint. 
Low-voltage voice-coil motor driver IC with I2C interfaceThe new A3904 from Allegro MicroSystems Europe is said to be the first in a series of voice-coil motor driver ICs designed for camera auto-focus and zoom applications. Featuring a built-in I2C serial interface for precise high-speed digital programming with only two control lines, the new device features an operating voltage range of 2.4 to 5.5 V and a maximum output current of 127 mA. Output current is programmed via the I2C interface in 500 µA increments with clock rates up to 400 kHz. National's Switching Regulators available from RSRS Components has announced that it will distribute a new range of ten Buck switching regulators, launched by National Semiconductor. The new line of LM201xx and LM202xx synchronous Buck regulators includes 2A, 3A, 4A and 5A output current devices. There are ten synchronous Buck regulators, providing high-efficiency DC-DC power conversion for point-of-load power supply designs. The regulators feature a variety of input voltages and output currents, offering a combination of power sequencing, adjustable switching frequency and clock synchronisation options. 
3-channel regulator allows mobile device designers to extend system functionalityAnalogicTech has introduced the AAT2504, an adjustable 3-channel regulator that combines a step-down converter with two low dropout linear regulators (LDOs). Targeted at mobile devices with rapidly changing feature sets, the AAT2504 allows designers to extend system functionality and still benefit from power management integration. 
Power Management IC from TI maximises energy in Multi-Kilowatt SystemsTexas Instruments has introduced what it says is the industry's first single-chip, interleaved power factor correction (PFC) control circuit for multi-kilowatt communications, server and industrial systems. The new UCC28070 two-phase, average current-mode controller allows designers to simplify power design, increase system reliability and achieve a greater than 0.9 power factor rating, which improves energy efficiency. 
LED Driver is designed for solar applicationsPREMA Semiconductor GmbH has extended its family of LED drivers by adding a boost driver for solar applications. The new PR4403 drives and controls white LEDs out of one single battery charged by solar cells. It uses the connected solar cells to detect daylight. 
16-channel pure-CMOS LED driver from ToshibaToshiba Electronics Europe (TEE) has introduced a 16-output constant-current LED driver, which allows closely matched drive currents within ±1% for up to 16 LEDs using only one programming resistor. The TCA62746 is built using pure CMOS technology, delivering a low-cost solution to driving multi-LED arrays for large-size display panels. Convenient features to control large LED arrays are managed via the device's three-wire serial interface, which enables direct communication with a host controller. 
Step-up converter from AnalogicTech delivers 500mA in TSOT23 packageAnalogicTech has introduced a synchronous step-up converter that offers designers extremely high output current in a compact package. Designed to support a wide range of handheld portable applications, the AAT1217 delivers up to 100mA output from a single-cell alkaline battery input, up to 400mA from a dual-cell alkaline battery input and up to 500mA from a single-cell Lithium-Ion battery input while supporting startup as low as 0.85V. 
Catalyst Adds High-Power LED Driver Optimized for Rapidly Growing, Mid-Size LCD Panel MarketCatalyst Semiconductor has expanded its line of high-power LED drivers with a new device optimized for the rapidly growing mid-size LCD panel market. The new CAT4139 boost converter provides a switch current up to 750mA and drives LED strings up to 22V, making it an ideal choice for digital photo frames and other backlighting applications where high LED counts (up to 40 LEDs) are emerging. 
Step-Down DC/DC Controller in 4 x 4 QFN from Linear TechnologyLinear Technology has announced the LTC3850, a 95% efficient, dual output synchronous step-down switching regulator controller that drives all N-channel power MOSFET stages with coincident or ratiometric tracking. The 4V to 24V input range encompasses a wide variety of applications including most intermediate bus voltages and battery chemistries. The strong on-board driver allows the use of high power external MOSFETs to produce output currents up to 20A with output voltages ranging from 0.8V to 5.5V. 
LED Drivers from TI Boost Video Quality in Large-Panel Signage ApplicationsTexas Instruments has introduced two 16-channel, constant-current sink, light-emitting diode (LED) drivers with dot correction and grayscale on one integrated circuit (IC) for high-quality video. The drivers give designers increased system reliability and dynamic brightness control to enhance the resolution for large-panel mono-, multi- or full-color LED displays, LED signboards and display backlighting. 
Power Switches in SC-75 Packaging Lower Thermal Resistance in Portable ApplicationsFairchild Semiconductor has released the FDMJ1023PZ and the FDFMJ2P023Z MicroFET power switches for low power (<30V) applications such as charging, asynchronous DC/DC and load switching. These power switches operate with gate voltages as low as 1.5V while offering 75 percent lower RDS(ON) and 66 percent lower thermal resistance compared to other solutions. Utilizing Fairchild's advanced PowerTrench technology, the FDMJ1023PZ and FDFMJ2P023Z are housed in 2.0mm x 1.6mm SC-75 packaging, which is 65% smaller than 3 X 3mm SSOT-6 and 20% smaller than SC-70 packaging. 
Single Port PoE Interface With Integrated DC-DC Controller from Silicon LabsSilicon Laboratories has announced the industry's first dual-function, single-port Power over Ethernet (PoE) controller with an integrated DC/DC controller for power sourcing equipment (PSE). By combining these two functions, the Si3460 simplifies development efforts, reduces system costs and eliminates specification compliance challenges for designers of a broad range of emerging PoE applications such as in home gateways, set-top boxes, cable modems, DSL modems and Voice over IP systems. 
USB Power Manager Li-Ion/Polymer battery applicationsLinear Technology has announced the LTC3557, a multi-function power management solution for Li-Ion/Polymer battery applications. The LTC3557 integrates a linear PowerPath manager, a standalone battery charger, ideal diode, three high efficiency synchronous buck regulators and an always-on LDO in a low-profile 4mm x 4mm QFN package. The powerpath manager seamlessly manages the transition between multiple input sources and power to the load, while for fast charging the linear battery charger delivers up to 1.5A charge current from a wall adapter supply or up to 500mA charge current from a USB port. 
Power Switch from Fairchild said to increases efficiency up to 97 Percent in Resonant Converters up to 450WFairchild Semiconductor highly integrated Green FPS power switch, the FSFR2100 , increases power efficiency and system reliability, and reduces valuable design time in resonant converter designs such as telecom power, high end audio amplifiers, large size laser printers and LCD and PDP TV power supplies. Offering a "system-in-a-package" approach that integrates everything necessary to build reliable and efficient resonant converters, this power switch integrates a pulse-frequency-modulation (PFM) controller with a high voltage gate driver circuit and two fast recovery MOSFETs (FRFET®) along with soft-start, burst operation and important protection features into a thermally-efficient 9-SIP package. 
Three-phase brushless DC motor pre-driver IC from AllegroThe new A4931 from Allegro MicroSystems Europe is a 3-phase brushless DC motor pre-driver integrated circuit with outputs for the direct high-current gate drive of an all N-channel power MOSFET 3-phase bridge with a maximum supply voltage of 38 V. The device includes three Hall-element inputs, a sequencer for commutation control, fixed off-time pulse width modulation (PWM) current control and locked rotor protection. Output current is scalable with the choice of external MOSFETs. 
DC/DC Converters from TI have Dual Outputs for Digital TVs and Set-Top BoxesTexas Instruments has introduced four dual-output SWIFT DC/DC step-down converters with integrated FETs that deliver 2 A and 3 A of continuous output current and support input voltages of 4.5 V to 28 V. The simple-to-design switchers, which come in a monolithic package, speed time to market, reduce external component count and help reduce cost for point-of-load systems used in a wide variety of applications including HDTVs, set-top boxes and other consumer electronic systems. See: www.ti.com/dualswift. 
Switch Mode USB Power Manager & Triple Buck Regulator from Linear TechnologyLinear Technology has announced the LTC3555, the first in a family of next generation multi-function power management solutions for Li-Ion/Polymer battery applications. The LTC3555 integrates a switching PowerPath manager, a standalone battery charger, an ideal diode, I2C control, three high efficiency synchronous buck regulators plus an always-on LDO, all in a compact, low-profile 4mm x 5mm QFN package. The LTC3555's PowerPath control feature seamlessly manages power flow between an AC wall adapter or USB port, Li-Ion battery and system load while its instant-ON operation ensures system load power even with a dead or missing battery. 
Dual slew rate controlled load switch from AnalogicTech reduces system footprint and costAnalogicTech has introduced the AAT4282A, a dual, slew rate controlled load switch that allows designers to reduce parts count and cost by integrating two low resistance slew rate controlled load switches in a single 2 x 2mm package. Part of AnalogicTech's rapidly growing application specific Power MOSFET (ASPM) product family, the AAT4282A features two MOSFETs, each with a typical RDS(ON) of just 60mohms at 5V to support higher load switch current handling capacity with a lower forward voltage drop than single competition devices on the market. PIV Technology extends LED driver offeringPIV Technology has extended its LED driver product offering with the addition of a new series from Recom International, the German based DC/DC converter manufacturer. The RCD series of LED drivers is suitable for many applications including high power LED driving, automotive lighting, Industrial lighting, display lighting, general lighting and provision of a constant current source. 
DC/DC Converter Delivers Independent 300mA, 2 x 200mA & 100mA Outputs from a 3mm x 3mm QFNLinear Technology has announced the LTC3544, a quad channel, high efficiency, 2.25 MHz, synchronous buck regulator that delivers up to 300mA, dual 200mA and 100mA continuous outputs from a 3mm x 3mm QFN package. Using a constant frequency current mode architecture, the LTC3544 operates from an input voltage range of 2.25V to 5.5V, making it ideal for single-cell Li-Ion/polymer, or multicell alkaline/NiCad/NiMH applications. It can generate output voltages as low as 0.8V, enabling it to power the latest generation of low voltage DSPs and microcontrollers. Its 2.25MHz switching frequency enables the utilization of tiny, low cost ceramic capacitors and inductors less than a 1mm in height, which combined with a 3mm x 3mm QFN package, provide a very compact quad output solution. 
PWM Controllers from STMicroelectronicsSTMicroelectronics has extended its portfolio of power management devices with a new family of flexible and high-performance PWM (Pulse Width Modulation) controllers intended for motherboard and POL (Point of Load) markets. Four new products – L6726A, L6727, L6728 and L6728A – integrate a voltage reference, control logic, gate drivers, monitoring and protection circuits into standard SO-8 or tiny 3x3mm DFN packages. Two of the chips offer additional features for high-level applications, including a PowerGOOD output to report power status and the output voltage sense for accurate over-voltage and under-voltage protection. 
Gate driver ICs from International Rectifier with integrated bootstrap functionalityInternational Rectifier has introduced the IRS2336xD protected 600V three-phase gate driver ICs with integrated bootstrap functionality for appliance motor control, servo drives, micro-inverter drives, and a wide range of general purpose applications. 
LED Driver for cell phone displays and lightingLinear Technology has announced the LTC3219, an inductorless, low noise, high efficiency LED driver for cell phone displays and lighting. The IC provides nine individually configurable current sources for Main, Sub and RGB displays. Display currents are set via a precision internal current reference. The universal current sources can be digitally controlled with independent dimming, brightness, blinking, and gradation control, programmable via a simple two-wire I2C serial interface. The LTC3219's 2.9V to 5.5V input voltage range has been optimized for single cell Li-Ion/Polymer battery applications. Efficiencies when driven from a Lithium battery (3.6V nominal) reach 91% with a quiescent current of only 400uA, maximizing battery run-time. Slew-rate limited switching reduces conducted and radiated noise (EMI). 
LED driver with PWM brightness control for large display applicationsThe new A6281 from Allegro MicroSystems Europe is a three-channel constant-current LED driver IC with an on-chip oscillator for simple programmable brightness control. The new device is ideally suited to driving clusters of red/green/blue (RGB) LEDs in applications where the cluster forms one pixel in a large display or a lighting fixture. It precisely controls LED brightness via 10-bit pulse-width modulation (PWM) on each channel, complemented by 7-bit analogue current control on each channel to adjust colour balance. 
Power over Ethernet interface controller from Linear TechnologyLinear Technology has introduced the LTC4264, a Power over Ethernet (PoE) interface controller for high-power Powered Device applications. The LTC4264 allows users to develop power-hungry applications beyond the IEEE 802.3af-mandated 12.95W limit, while still maintaining backward compatibility. The LTC4264 can deliver up to 35W for 2-pair systems and as much as 70W for 4-pair systems. To control turn-on surge current in the system, the LTC4264 incorporates a precision dual current limiting circuit with an onboard power MOSFET and sense resistor to provide a complete inrush control circuit without additional external components. The LTC4264 is compatible with the most current decisions on the PoE+ (P802.at) committee. 
Rectifiers Increase Power Supply Efficiency an |
